CVE-2020-25850
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThe function, view the source code, of HGiga MailSherlock does not validate specific characters. Remote attackers can use this flaw to download arbitrary system files.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceHGiga MailSherlock contains a path traversal vulnerability where a function used to view source code does not properly validate specific characters in user input. Remote attackers can exploit this by crafting requests with directory traversal sequences (e.g., ../) to access and download arbitrary system files outside the intended directory.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 4.5-117< 4.5-117CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm HGiga MailSherlock is installedLocate the MailSherlock installation directory or check system services for 'MailSherlock', 'Msr45', or 'Ssr45' processesAffected if The product is present on the system
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Identify the installed versionCheck the MailSherlock application version information, typically found in the application UI under 'About' or in the installation directory metadataAffected if The version is lower than 4.5-117 (for Msr45 or Ssr45 variants)
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Verify the source code viewing feature existsLocate the function or module responsible for viewing source code within the MailSherlock web interface or APIAffected if The source code viewing feature is accessible to users
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Test for path traversal vulnerabilityUsing an authorized test account, send a crafted request to the source code viewing endpoint with directory traversal sequences (e.g., ../../../../etc/passwd)Affected if The application returns contents of files outside the intended directory
The environment is affected if HGiga MailSherlock (Msr45 or Ssr45) with version lower than 4.5-117 is installed and the source code viewing feature is accessible, allowing path traversal requests to read arbitrary files.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor data4.5-117
Implement strict input validation and path sanitization to restrict file access to intended directories. The vendor should release a patch that validates and filters path traversal characters (such as '../') and implements proper bounds checking on file paths.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-25850 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2020-25850 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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